NCUA-insured credit union
Tidemark
Credit Union headquartered in Seaford, Delaware.
Source: NCUA call report data, data as of March 31, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 1941 Bridgeville Hwy Seaford, DE 19973 |
| County | Sussex |
| Website | not published in NCUA data |
| Phone | (302) 629-0100 |
NCUA record
| NCUA Charter | 13121 |
| Federal Reserve RSSD ID | 879989 |
| Status | Active |
| Charter type | 1 (NCUA) |
| Financials as of | March 31, 2026 |
Routing number
NCUA does not publish ABA routing numbers, and many credit unions use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this credit union, the "account details" screen in its online banking, or its official website.
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Offices
| Tidemark Federal Credit Union main office Seaford, DE |
1941 Bridgeville Hwy, 19973 (302) 629-0100 8-5 |
| Tidemark Federal Credit Union Lewes, DE |
34686 Old Postal Ln, 19958 (302) 629-0100 9 am to 5 pm |
| Tidemark Federal Credit Union Milford, DE |
140 Aerenson Dr, 19963 (302) 629-0100 9 a.m. to 5 p.m. |
| Tidemark Federal Credit Union Millsboro, DE |
216 S Washington St P O Box 1630, 19966 (302) 629-0100 9 am to 5 pm |
| Tidemark Federal Credit Union Millsboro, DE |
24940 John J Williams Hwy, 19966 (302) 629-0100 9 am to 5 pm |
| Tidemark Federal Credit Union Selbyville, DE |
36445 Lighthouse Rd, 19975 (302) 629-0100 9 am to 5 pm |
| Tidemark Federal Credit Union Salisbury, MD |
1305 S Salisbury Blvd, 21801 (302) 629-0100 9 am to 5 pm |